Choke controller in VW1302

Automatic choke system in VW 1302 Super Beetle must be adjusted to prolong the activating time period according to the atmospheric temperature changes, because too early cut off of choking function oblige me to keep idling speed controlling gas pedal subtly, otherwise motor stops in motor too much cooling condition, probably this inconvenient phenomena must be caused by the  dysfunction of thermostat(fully opened from the beginning), just out of order. As a matter of fact, as  the measure for that, the automatic choke module should be loosened on 3 holding screws, and rotated about 15 degree counter-clockwise direction and re-tightened. As the rough combustion appears only while the after cold starting phase, the air volume control screw nor bypass screw should not be adjusted. Above all, I must pass the Legal Inspection by authorities on the end of this February performed every 2 years periodically, so any rough adjustment on Solex 34 PICT3 carburetor should not be done considering about the exhaust gas checking, Carbon mono-Oxide below 0,5% and Hydro Carbon below 1300PPM. Best care must be taken to establish the good gas mixture carburetor condition.